The dirtied_before is only used when b_io is not empty, so only calculate
when b_io is not empty.
Signed-off-by: Kemeng Shi <shikemeng@xxxxxxxxxxxxxxx>
---
fs/fs-writeback.c | 25 +++++++++++++------------
1 file changed, 13 insertions(+), 12 deletions(-)
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index b61bf2075931..e8868e814e0a 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -2118,20 +2118,21 @@ static long wb_writeback(struct bdi_writeback *wb,
spin_lock(&wb->list_lock);
- /*
- * Kupdate and background works are special and we want to
- * include all inodes that need writing. Livelock avoidance is
- * handled by these works yielding to any other work so we are
- * safe.
- */
- if (work->for_kupdate) {
- dirtied_before = jiffies -
- msecs_to_jiffies(dirty_expire_interval * 10);
- } else if (work->for_background)
- dirtied_before = jiffies;
-
trace_writeback_start(wb, work);
if (list_empty(&wb->b_io)) {
+ /*
+ * Kupdate and background works are special and we want to
+ * include all inodes that need writing. Livelock avoidance is
+ * handled by these works yielding to any other work so we are
+ * safe.
+ */
+ if (work->for_kupdate) {
+ dirtied_before = jiffies -
+ msecs_to_jiffies(dirty_expire_interval *
+ 10);
+ } else if (work->for_background)
+ dirtied_before = jiffies;
+
queue_io(wb, work, dirtied_before);
queued = true;
}
--
2.30.0
